Back in the '50s a geology professor at the University of Wyoming built a full size T. Rex out of copper plates which still stands besides the entrance to the UW Geology Museum. The expectation was that it would turn green as it weathered. However, there is not enough reactive chemicals in the rain in Wyoming to create verdigris (copper carbonate) or any other green oxidation product. So, it has weathered to a nice dark brown which may be a more authentic color for the critter than green anyway.
You Might be a Coppersmith if
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Back in the '50s a geology professor at the University of Wyoming built a full size T. Rex out of copper plates which still stands besides the entrance to the UW Geology Museum. The expectation was that it would turn green as it weathered. However, there is not enough reactive chemicals in the rain in Wyoming to create verdigris (copper carbonate) or any other green oxidation product. So, it has weathered to a nice dark brown which may be a more authentic color for the critter than green anyway.
"By hammer and hand all arts do stand."